QuartzBuilder allows you to easily create applications from your Quartz Composer creations, without having to muck about in Xcode.
Your compositions are encrypted, and Official API plugins, Unofficial API plugins, and simple resources are automatically bundled with the generated application.
Cocoa NSApplication and NSWindow events and properties are exposed to the composition, allowing unprecedented control over the rendering environment — for example, the window can be made full-screen on launch.